root cap


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root cap

n. Botany
A thimble-shaped mass of cells that covers and protects the root tip.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

root cap

a structure found at the apex of all ROOTS (except those of many water plants), produced by the APICAL MERISTEM. The cap consists of a thimble-shaped collection of PARENCHYMA cells which have a protective function. As the root pushes its way through the soil the outer (older) cells of the root cap are sloughed off and replaced by new cells from the MERISTEM.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive ?
The Trilepis-type can be derived from the Carex-type by a flattening of the scutellum and a shifting of the root cap to a subbasal position (Fig.
Phylogeny and Systematics of Cyperaceae, the Evolution and Importance of Embryo Morphology
However, root caps were heavily colonised by bacteria, and contact points with remnant roots had more filamentous bacteria than other regions.
Rhizosphere biology and crop productivity--a review
An ultrastructural study of the inhibition of mucilage secretion in the wheat root cap by aluminium, Pp 779-787 in Plant-soil interactions at low pH (R.
In vitro and in vivo studies of the effects of aluminum on wheat (Triticum aestivum L.) root cell wall peroxidases
* Root cap. The root cap is located at the tip of the root and consists of several layers of cells that protect the root as it grows through the soil.
Chapter 6 classification of plants and plant anatomy
Roots harvested in this manner had little, if any, soil contamination and root caps were observed in >95% of the roots.
Early developmental responses of white clover roothair lengths to calcium, protons, and aluminum in solution and soil cultures
Ryan PR, Ditomoso JM, Kochian LV (1993) Aluminum toxicity in roots: an investigation of spatial sensitivity and the role of the root cap. Journal of Experimental Botany 44, 437-446.
Physiological and biochemical studies on aluminum tolerance in pineapple
Strain Sp7 preferentially colonized the root hair proliferation zone with a few cells found on the root elongation and root cap zone.
Use of Plant Growth Promoting Bacteria in Banana: A New Insight for Sustainable Banana Production
has ruled out a role of the root cap and emphasizes that the root
Molecular physiology of aluminum toxicity and tolerance in plants
In seed harvested at 500 g [H.sub.2]O [kg.sup.-1] fw (about 530 g [H.sub.2]O [kg.sup.-1] fw embryo MC), LB were dispersed throughout the cytoplasm in root cap, outer QC cells, and inner QC cells (Fig.
Alignment of lipid bodies along the plasma membrane during the acquisition of desiccation tolerance in maize seed. (Seed Physiology, Production & Technology)
surface of the root cap and on the epidermis and root-cap fragments
Mycorrhizae are present in cycad roots
Aluminun toxicity in roots: An investigation of spatial sensitivity and the role of the root cap. J.
Physiological genetics of aluminum tolerance in the wheat cultivar Atlas 66. (Crop Physiology & Metabolism)

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